SD-Access and Wireless Integration
Control plane traffic is CAPWAP inside of VXLAN-GPO. Dataplane traffic can just ride VXLAN-GPO
Fabric design
FEW — Fabric Enabled wireless
The client mac is the EID.
SD access wireless
- CAPWAP the control plane traffic
- VXLAN-GPO the data plane, tunnel it to an edge node.
- APs act as VTEPS.
Fabric APs
- Go into the AP subnet, in the overlay
- Go in the INFRA_VN
- Use CAPWAP for control-plane only
- Converts wireless data into VXLAN-GPO, encoding the VNI, and SGT
- Join the WLC in Local mode
- 20ms of latency, max
Nonfabric design
- AKA OTT (Over The Top)
- Rides VXLAN, not VXLAN aware.
- Good for existing networks, where the wireless is already working and disruption would be costly.
CUWN wireless OTT
- CUWN: Cisco Unified Wireless Network
Everything is CAPWAP inside of VXLAN-GPO. Central switching.
FlexConnect OTT
- CAPWAP Tunnel the control traffic.
- Dump the traffic at the local switch.
Mixed mode OTT
- Some APs tunnel all their traffic back with CAPWAP.
WLC
- Subnet for the WLC goes into the underlay network, via an IGP.
IPAM integraiton
- Infoblox
- Bluecat
References
SD-Access Wireless Design and Deployment Guide - Cisco DNA center 2.1.1